heparan sulfate alpha-D-glucosaminide heparan sulfate alpha-D-glucosaminide polyanion heparan sulfate alpha-D-glucosaminide chebi_ontology CHEBI:58388 A carbohydrate acid derivative anion arising from deprotonation of the carboxylic acid and sulfate groups of the repeating units and protonation of the free amino group on the glucosamine of heparan sulfate alpha-D-glucosaminide; major species at pH 7.3. ionic polymer organic sulfamate oxoanion carbohydrate acid derivative anion